# US 10,870,578 B2 · Black-film-forming mixed powder

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- Number: US 10,870,578 B2
- Document ID: US10870578B2
- Status: Granted
- Kind: B2
- Application number: 16/462,341
- Filed: 2017-10-30
- Published: 2019-12-05
- Granted: 2020-12-22
- Earliest claimed: 2016-11-22
- Assignees: Mitsubishi Materials Electronic Chemicals Co., Ltd.
- Applicants: Mitsubishi Materials Electronic Chemicals Co., Ltd.
- Inventors: Kensuke Kageyama; Takashi Konishi
- Web page: https://patentgrep.com/patent/US10870578B2

## CPC

- C01B 21/076: with titanium or zirconium {or hafnium}
- C09C 1/00: Treatment of specific inorganic materials other than fibrous fillers (tenebrescent materials C09K9/00; luminescent materials C09K11/00); Preparation of carbon black
- C01B 21/0821: {Oxynitrides of metals, boron or silicon}
- G03F 7/164: {using electric, electrostatic or magnetic means; powder coating}
- C01P 2002/72: by d-values or two theta-values, e.g. as X-ray diagram
- C01P 2002/84: by UV- or VIS- data
- C01P 2006/12: Surface area
- C01P 2006/80: Compositional purity
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C09C: TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B14/00, C04B18/00, C04B20/00); PREPARATION OF CARBON BLACK {; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS}
- G03F: PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR; (phototypographic composing devices B41B; photosensitive materials or processes for photographic purposes G03C; electrophotography, sensitive layers or processes therefor G03G)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

## Abstract

Provided is a black-film-forming mixed powder containing: (A) a zirconium nitride powder that does not contain zirconium dioxide, a low-order oxide of zirconium, or a low-order oxynitride of zirconium; and (B) a titanium nitride powder or a titanium oxynitride powder, wherein the content ratio of (A) the zirconium nitride powder and (B) the titanium nitride powder or the titanium oxynitride powder is within the range of 90:10 to 25:75 in terms of mass ratio (A:B). When the light transmittance at a wavelength of 400 nm is X, the light transmittance at a wavelength of 550 nm is Y, and the light transmittance at a wavelength of 1,000 nm is Z in a spectrum of a dispersion in which the mixed powder is dispersed in a concentration of 50 ppm, X>10%, Y<10%, Z<16%, X/Y is 1.25 or more, and Z/Y is 2.0 or less.

## Claims

### Claim 1

A black-film-forming mixed powder which comprises (A) a zirconium nitride powder and (B) a titanium nitride powder or a titanium oxynitride powder, wherein a content ratio of (A) the zirconium nitride powder and (B) the titanium nitride powder or the titanium oxynitride powder is within a range of (90:10) to (25:75) in terms of mass ratio (A:B),
the zirconium nitride powder has a peak corresponding to zirconium nitride in an X-ray diffraction profile, but does not have a peak corresponding to zirconium dioxide, a peak corresponding to a low-order oxide of zirconium or a peak corresponding to a low-order oxynitride of zirconium,
in a spectrum of a dispersion in which the mixed powder is dispersed in a dispersing liquid with a concentration of 50 ppm, when a light transmittance at a wavelength of 400 nm is X, a light transmittance at a wavelength of 550 nm is Y, and a light transmittance at a wavelength of 1,000 nm is Z, X>10%, Y<10%, Z<16%, X/Y is 1.25 or more and Z/Y is 2.0 or less;
wherein a black film formed by the black-film-forming mixed powder exhibits a greater light shielding property at a wavelength of 500 nm to 1,100 nm than when the mass ratio (A:B) is outside of the range of (90:10) to (25:75), and/or wherein a black film formed by the black-film-forming mixed powder exhibits greater light transmittance at a wavelength of 365 nm to 410 nm than when the mass ratio (A:B) is outside of the range of (9:10) to (25:75).

### Claim 2 (depends on 1)

The black-film-forming mixed powder according to claim 1, wherein the mass ratio (A:B) is within a range of (80:20) to (40:60).

### Claim 3 (depends on 1)

The black-film-forming mixed powder according to claim 1, wherein the zirconium nitride powder has a specific surface area measured by the BET method of 20 to 90 m2/g, and the titanium nitride powder has a specific surface area measured by the BET method of 10 to 90 m2/g.